@@ -242,9 +242,16 @@ static size_t pmem_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff,
return copy_from_iter_flushcache(addr, bytes, i);
}
+static void pmem_dax_flush(struct dax_device *dax_dev, pgoff_t pgoff,
+ void *addr, size_t size)
+{
+ wb_cache_pmem(addr, size);
+}
+
static const struct dax_operations pmem_dax_ops = {
.direct_access = pmem_dax_direct_access,
.copy_from_iter = pmem_copy_from_iter,
+ .flush = pmem_dax_flush,
};
static void pmem_release_queue(void *q)
@@ -19,6 +19,8 @@ struct dax_operations {
/* copy_from_iter: dax-driver override for default copy_from_iter */
size_t (*copy_from_iter)(struct dax_device *, pgoff_t, void *, size_t,
struct iov_iter *);
+ /* flush: optional driver-specific cache management after writes */
+ void (*flush)(struct dax_device *, pgoff_t, void *, size_t);
};
#if IS_ENABLED(CONFIG_DAX)